Wall sconce backplate



FIG. 1 is a perspective view from below of a wall sconce backplate in accordance with my design;

FIG. 2 is a top plan view of the wall sconce backplate in accordance with my design;

FIG. 3 is a bottom plan view of the wall sconce backplate in accordance with my design;

FIG. 4 is a front elevation view of the wall sconce backplate in accordance with my design; and,

FIG. 5 is a side elevation view of the wall sconce backplate in accordance with my design, the opposite side being a mirror image of that shown.

The broken lines showing environmental structure are for illustrative purposes only and form no part of the claimed invention. 

The ornamental design for a wall sconce backplate, as shown and described. 